/// <returns>The sequence number</returns>
public static Int64 CreateRestorePoint(String description, SystemRestoreType type)
{
if (!IsSystemRestoreAvailable())
{
throw new NotSupportedException("System Restore is not supported");
}
if (description == null)
{
throw new ArgumentNullException("description");
}
if (description.Length > 256)
{
throw new ArgumentException("description cannot exceed 256 characters");
}
_isCreating = true;
RestorePointInfo point = new RestorePointInfo();
StateManagerStatus status = new StateManagerStatus();
point.dwEventType = (Int32)SystemRestoreEventType.BeginSystemChange;
point.dwRestorePtType = (Int32)type;
point.llSequenceNumber = 0;
point.szDescription = description;
NativeMethods.SetSystemRestorePoint(ref point, out status);
if (status.nStatus != 0)
{
// throw?
}
return(status.llSequenceNumber);
}
/// <summary>
/// Creates or modifies the system restore point.
/// </summary>
/// <param name="info">Information about the restore point to create or modify.</param>
/// <param name="status">Status information of the restore point created or modified.</param>
/// <returns>True if the operation was successful; otherwise, false.</returns>
/// <remarks>
/// The error code is reset to 0 (success) after each call.
/// </remarks>
/// <seealso cref="SetNextErrorCode"/>
public bool SetRestorePoint(RestorePointInfo info, out StateManagerStatus status)
{
status.SequenceNumber = this.SequenceNumber;
status.ErrorCode = this.nextErrorCode;
// Reset next error code.
this.nextErrorCode = 0;
return(0 == status.ErrorCode);
}
/// <summary>
/// Creates or modifies the system restore point.
/// </summary>
/// <param name="info">Information about the restore point to create or modify.</param>
/// <param name="status">Status information of the restore point created or modified.</param>
/// <returns>True if the operation was successful; otherwise, false.</returns>
/// <remarks>
/// The error code is reset to 0 (success) after each call.
/// </remarks>
/// <seealso cref="SetNextErrorCode"/>
public bool SetRestorePoint(RestorePointInfo info, out StateManagerStatus status)
{
status.SequenceNumber = this.SequenceNumber;
status.ErrorCode = this.nextErrorCode;
// Reset next error code.
this.nextErrorCode = 0;
return 0 == status.ErrorCode;
}
public static void CancelRestorePoint(Int64 sequenceNumber)
{
if (!IsSystemRestoreAvailable())
{
throw new NotSupportedException("System Restore is not supported");
}
RestorePointInfo point = new RestorePointInfo();
StateManagerStatus status = new StateManagerStatus();
point.dwEventType = (Int32)SystemRestoreEventType.EndSystemChange;
point.dwRestorePtType = (Int32)SystemRestoreType.ApplicationCancelled;
point.llSequenceNumber = sequenceNumber;
NativeMethods.SetSystemRestorePoint(ref point, out status);
if (status.nStatus != 0)
{
// throw?
}
}
